10 Best Weatherproof Padlocks 2025 in the United States

The Master Lock Magnum Heavy Duty Outdoor Padlock with Key, model M115XDLF, is designed for robust outdoor use. It features a laminated steel body with a weather-resistant cover, enhancing its durability against harsh weather. The shackle is made from Tough-Cut octagonal boron-carbide, which is 50% harder than typical hardened steel, offering a high level of cut resistance—ideal for securing fences, gates, sheds, and more.

The 4-pin cylinder and dual ball bearing locking mechanism increase protection against picking and prying attempts, while a covered keyway and shackle add extra weather protection. The padlock's dimensions are compact with a 1-7/8 inch wide body and a 5/16 inch diameter shackle, providing flexibility for various applications. It includes one lock and two keys for convenience.

The primary material listed as plastic might be confusing, as the core body is steel with plastic covering for weather resistance. Weighing only 3.2 ounces, it is lightweight, which may or may not be a concern depending on the user's preference. It ranks #2 in Keyed Padlocks, highlighting its popularity and reliability as an outdoor locking solution. It’s important to measure your door's backset, cross bore, and thickness to ensure proper fitment.

The Master Lock Combination Lock, M175XDLF, is a heavy-duty weatherproof padlock designed for outdoor use, making it an excellent choice for securing gates, sheds, or storage areas. One of its standout features is the resettable four-digit combination, which allows for easy personalization and eliminates the need for keys, reducing the risk of losing them. The lock is constructed from durable zinc and features a tough octagonal boron-carbide shackle, which is significantly harder than traditional hardened steel. This toughness provides impressive resistance against picking and prying, enhancing security further.

For those concerned about weather conditions, this padlock comes with a shackle seal and a covered dial, offering superior protection against moisture and dust, thus extending its lifespan. The extended shackle is another plus, allowing for flexibility in various applications, especially when securing items with different thicknesses.

There are some considerations to keep in mind. While the combination lock is convenient, it may be perceived as less secure than traditional key locks, particularly if the combination is not chosen wisely. Additionally, the lock's size might not suit all applications, especially if a more compact model is required. The one-directional dial may also pose challenges in low-light scenarios, as it relies on remembering the specific turning direction.

The ABUS Granit 37/80 padlock is a robust and reliable choice for securing your valuables, offering a high level of security suitable for both indoor and outdoor use. Made from hardened steel and featuring a corrosion-resistant coating, this padlock is designed to withstand harsh weather conditions and physical attacks such as cutting and drilling. The enclosed shackle design further enhances its security, though it requires precise fitting, so it's essential to check the dimensions (1/2" shackle diameter, 7/8" vertical and horizontal clearances) to ensure compatibility with your lock hasp or chain.

The advanced Plus cylinder system provides exceptional protection against picking and drilling, with over 250,000 possible key variations, ensuring peace of mind for users seeking high-level security. The lock comes with two standard Plus keys, but it’s worth noting that they are not easily replaceable if lost. At a weight of 2.4 pounds and dimensions of 3.09 x 1.53 x 3.06 inches, the padlock is quite substantial, which adds to its deterrent effect but may be cumbersome for some users.

The padlock’s versatility allows it to be used for various applications, from storage units and warehouses to gates and garages. However, the need for precise fitting and the lack of a key replacement service might be considered drawbacks. In summary, the ABUS Granit 37/80 is a heavy-duty, weatherproof padlock that delivers excellent security but requires careful consideration of its dimensions and key management.